Headphone



FIG. 1 is the left and front side perspective view of the headphone showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof, the rear elevational view being a mirror image;

FIG. 4 is a left side elevational view thereof, the right side elevational view being a mirror image; and,

FIG. 5 is a bottom plan view thereof.

The broken lines in FIGS. 1 showing one of swiveling hinges is for illustrative purpose only and form no part of the claimed design. 

CLAIM The ornamental design for a headphone, as shown and described. 